From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001 From: hc <hc@nodka.com> Date: Wed, 31 Jan 2024 03:29:01 +0000 Subject: [PATCH] add lvds1024*800 --- kernel/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt | 16 ++++++++++++---- 1 files changed, 12 insertions(+), 4 deletions(-) diff --git a/kernel/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt b/kernel/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt index cfa4ed4..5ef659c 100644 --- a/kernel/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt +++ b/kernel/Documentation/devicetree/bindings/fpga/xilinx-slave-serial.txt @@ -1,17 +1,24 @@ Xilinx Slave Serial SPI FPGA Manager -Xilinx Spartan-6 FPGAs support a method of loading the bitstream over -what is referred to as "slave serial" interface. +Xilinx Spartan-6 and 7 Series FPGAs support a method of loading the +bitstream over what is referred to as "slave serial" interface. The slave serial link is not technically SPI, and might require extra circuits in order to play nicely with other SPI slaves on the same bus. -See https://www.xilinx.com/support/documentation/user_guides/ug380.pdf +See: +- https://www.xilinx.com/support/documentation/user_guides/ug380.pdf +- https://www.xilinx.com/support/documentation/user_guides/ug470_7Series_Config.pdf +- https://www.xilinx.com/support/documentation/application_notes/xapp583-fpga-configuration.pdf Required properties: - compatible: should contain "xlnx,fpga-slave-serial" - reg: spi chip select of the FPGA - prog_b-gpios: config pin (referred to as PROGRAM_B in the manual) - done-gpios: config status pin (referred to as DONE in the manual) + +Optional properties: +- init-b-gpios: initialization status and configuration error pin + (referred to as INIT_B in the manual) Example for full FPGA configuration: @@ -37,7 +44,8 @@ spi-max-frequency = <60000000>; spi-cpha; reg = <0>; - done-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>; prog_b-gpios = <&gpio0 29 GPIO_ACTIVE_LOW>; + init-b-gpios = <&gpio0 28 GPIO_ACTIVE_LOW>; + done-gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>; }; }; -- Gitblit v1.6.2